Common Ports
TCP / UDP
7
Echo
TCP, UDP
Echo service
19
CHARGEN
TCP, UDP
Character Generator Protocol, has severe vulnerabilities and thus is rarely used nowadays
20
FTP-data
TCP, SCTP
File Transfer Protocol data transfer
22
TCP, UDP, SCTP
Secure Shell, secure logins, file transfers (scp, sftp), and port forwarding
23
Telnet
TCP
Telnet protocol, for unencrypted text communications
25
SMTP [[SMTP (25, 465)]]
TCP
Simple Mail Transfer Protocol, used for email routing between mail servers
42
WINS Replication
TCP, UDP
Microsoft Windows Internet Name Service, vulnerable to attacks on a local network
43
WHOIS
TCP, UDP
Whois service, provides domain-level information
49
TACACS
UDP; can also use TCP but not necessarily on port 49
Terminal Access Controller Access-Control System, provides remote authentication and related services for network access
67
DHCP/BOOTP
UDP
Dynamic Host Configuration Protocol and its predecessor Bootstrap Protocol Server; server port
68
DHCP/BOOTP
UDP
Dynamic Host Configuration Protocol and its predecessor Bootstrap Protocol Server; client port
69
TFTP
UDP
Trivial File Transfer Protocol
70
Gopher
TCP
Gopher is a communication protocol for distributing, searching, and retrieving documents in Internet Protocol (IP) networks
79
Finger
TCP
Name/Finger protocol and Finger user information protocol, for retrieving and manipulating user information
80
HTTP [[Web enumeration]]
TCP, UDP, SCTP
Hypertext Transfer Protocol (HTTP) uses TCP in versions 1.x and 2. HTTP/3 uses QUIC, a transport protocol on top of UDP
88
Kerberos
TCP, UDP
Network authentication system
102
Microsoft Exchange ISO-TSAP
TCP
Microsoft Exchange ISO Transport Service Access Point (TSAP) Class 0 protocol
113
Ident
TCP
Identification Protocol, for identifying the user of a particular TCP connection
119
NNTP (Usenet)
TCP
Network News Transfer Protocol
123
NTP
UDP
Network Time Protocol
135
Microsoft RPC EPMAP [[WMI (135)]]
TCP, UDP
Microsoft Remote Procedure Call (RPC) Endpoint Mapper (EPMAP) service, for remote system access and management
137
NetBIOS-ns [[SMB (445, 139)]]
TCP, UDP
NetBIOS Name Service, used for name registration and resolution
138
NetBIOS-dgm [[SMB (445, 139)]]
TCP, UDP
NetBIOS Datagram Service, used for providing access to shared resources
143
TCP, UDP
Internet Message Access Protocol (IMAP), management of electronic mail messages on a server
161
SNMP-agents (unencrypted) SNMP (10161, UDP 161)
UDP
Simple network management protocol; agents communicate on this port
162
SNMP-trap (unencrypted) SNMP (10161, UDP 161)
UDP
Simple network management protocol; listens for asynchronous traps
177
XDMCP
UDP
X Display Manager Control Protocol
179
BGP
TCP
Border Gateway Protocol
194
IRC
UDP
Internet Relay Chat
201
AppleTalk
TCP, UDP
AppleTalk Routing Maintenance. Trojan horses and computer viruses have used UDP port 201.
264
BGMP
TCP, UDP
Border Gateway Multicast Protocol
318
TSP
TCP, UDP
Time Stamp Protocol
381
HP Openview
TCP, UDP
HP performance data collector
383
HP Openview
TCP, UDP
HP data alarm manager
411
(Multiple uses)
TCP, UDP
Direct Connect Hub, Remote MT Protocol
412
(Multiple uses)
TCP, UDP
Direct Connect Client-to-Client, Trap Convention Port
427
SLP
TCP
Service Location Protocol
443
HTTPS (HTTP over SSL) [[Web enumeration]]
TCP, UDP, SCTP
Hypertext Transfer Protocol Secure (HTTPS) uses TCP in versions 1.x and 2. HTTP/3 uses QUIC, a transport protocol on top of UDP.
445
[[SMB (445, 139)]] Microsoft DS SMB
TCP, UDP
Microsoft Directory Services: TCP for Active Directory, Windows shares; UDP for Server Message Block (SMB) file-sharing
464
Kerberos
TCP, UDP
For password settings on Kerberos
465
TCP
Authenticated SMTP over TLS/SSL (SMTPS), URL Rendezvous Directory for Cisco’s Source Specific Multicast protocol (SSM)
497
Dantz Retrospect
TCP, UDP
A software suite for backing up operating systems
500
IPSec / ISAKMP / IKE
UDP
Internet Protocol Security / Internet Security Association and Key Management Protocol / Internet Key Exchange
513
rlogin [[R-Services (512,513,514)]]
TCP
The Unix program rlogin allows users to log in on another host using a network.
514
syslog [[R-Services (512,513,514)]]
UDP
Syslog Protocol, for collecting and organizing all of the log files sent from the various devices on a network
515
LPD/LPR
TCP
Line Printer Daemon protocol, or Line Printer Remote protocol
520
RIP
UDP
Routing Information Protocol, used to find the optimal path between source and destination networks
521
RIPng (IPv6)
UDP
Routing Information Protocol next generation, the IPv6 compatible version of RIP
540
UUCP
TCP
Unix-to-Unix Copy Protocol
548
AFP
TCP
Apple Filing Protocol
554
RTSP
TCP, UDP
Real Time Streaming Protocol
546
DHCPv6
TCP, UDP
Dynamic Host Configuration Protocol version 6. DHCPv6 Clients listen for DHCPv6 messages on UDP port 546.
547
DHCPv6
TCP, UDP
DHCPv6 Servers and DHCPv6 Relay Agents listen for DHCPv6 messages on UDP port 547.
560
rmonitor
UDP
Remote Monitor
563
NNTP over TLS/SSL
TCP, UDP
Network News Transfer Protocol with encryption and verification
587
SMTP
TCP
For email message submission via SMTP
591
FileMaker
TCP
FileMaker Web Companion, the web publishing technology available in FileMaker versions 4-6
593
Microsoft DCOM
TCP, UDP
Distributed Component Object Model (DCOM)
596
SMSD
TCP, UDP
SysMan Station daemon
631
IPP
TCP
Internet Printing Protocol
639
MSDP (PIM)
TCP
Multicast Source Discovery Protocol, which is part of the Protocol Independent Multicast (PIM) family
646
LDP (MPLS)
TCP, UDP
Label Distribution Protocol, applies to routers capable of Multiprotocol Label Switching (MPLS)
691
Microsoft Exchange
TCP
Microsoft Exchange Routing
860
iSCSI
TCP
Internet Small Computer Systems Interface
873
rsync [[RSYNC (873)]]
TCP
The rsync file synchronization protocol efficiently transfers and synchronizes files between devices and networked computers.
902
VMware Server
TCP, UDP
VMware ESXi, a hypervisor
989
FTPS
TCP
File Transfer Protocol (data) over TLS/SSL
990
FTPS
TCP
File Transfer Protocol (control) over TLS/SSL
993
IMAP over SSL (IMAPS) [[IMAP POP3 (110, 143, 993, 995)]]
TCP
Internet Message Access Protocol over TLS/SSL
1025
Microsoft RPC
TCP
Microsoft Remote Procedure Call
1026-1029
Windows Messenger
UDP
Windows Messenger popup spam
1080
SOCKS proxy
TCP (or UDP since SOCKS5)
SOCKS stands for Socket Secure. This protocol exchanges network packets between a client and server through a proxy server.
1080
MyDoom
TCP
Computer virus
1194
OpenVPN
TCP, UDP
OpenVPN
1214
KAZAA
TCP
A peer-to-peer file-sharing protocol
1241
Nessus
TCP, UDP
Nessus Security Scanner
1311
Dell OpenManage
TCP
Dell EMC OpenManage Server Administrator Web GUI
1337
WASTE
TCP
WASTE peer-to-peer encrypted file-sharing Program
1589
Cisco VQP
TCP, UDP
Cisco VLAN Query Protocol (VQP)
1701
L2TP VPN
TCP
Layer Two Tunneling Protocol Virtual Private Networking
1720
H.323
TCP
H.323 Call Control Signaling, a VoIP call control protocol
1723
Microsoft PPTP
TCP, UDP
Point-to-Point Tunneling Protocol Virtual Private Networking
1725
Steam
UDP
Valve Steam Client uses port 1725
1741
CiscoWorks SNMS 2000
TCP
CiscoWorks Small Network Management Solution web server
1755
MMS
TCP, UDP
Microsoft Media Server
1812
RADIUS
UDP
RADIUS server authentication and authorization
1813
RADIUS
UDP
RADIUS server accounting
1863
(Multiple uses)
TCP, UDP
MSN Messenger, Xbox Live 360
1900
UPnP
UDP
Universal Plug and Play
1985
Cisco HSRP
UDP
Hot Standby Router Protocol
2000
Cisco SCCP
TCP
Skinny Client Control Protocol
2002
Cisco ACS
TCP
Access Control Server
2082
cPanel
TCP, UDP
cPanel default
2083
radsec, cPanel
TCP, UDP
Secure RADIUS Service (radsec), cPanel default SSL
2100
amiganetfs
TCP
Amiga Network Filesystem
2222
DirectAdmin
TCP
Graphical web hosting control panel
2302
Gaming
UDP
The game HALO uses this port extensively
2483
Oracle
TCP, UDP
Oracle database listening for insecure client connections to the listener, replaces port 1521
2484
Oracle
TCP, UDP
Oracle database listening for SSL client connections to the listener
2745
Bagle.C – Bagle.H
TCP
Computer worms
2967
Symantec AV
TCP, UDP
Symantec System Center agent (SSC-AGENT)
3050
Interbase DB
TCP, UDP
Borland Interbase database
3074
XBOX Live
TCP, UDP
Gaming: Xbox LIVE and Games for Windows – Live
3127
MyDoom
TCP
Computer worm
3128
HTTP Proxy
TCP
Common web proxy server ports: 80, 8080, 3128, 6588
3222
GLBP
TCP, UDP
Gateway Load Balancing Protocol
3260
iSCSI Target
TCP, UDP
Microsoft iSCSI Target Server
3689
DAAP
TCP
Digital Audio Access Protocol, used by Apple’s iTunes and AirPort Express
3690
SVN
TCP, UDP
Apache Subversion, a version control system
3724
World of Warcraft
TCP, UDP
Some Blizzard games, Unofficial Club Penguin Disney online game for kids
3784-3785
Ventrilo VoIP
TCP, UDP
Ventrilo’s Voice over Internet Protocol program
4333
mSQL
TCP
Mini SQL server
4444
Blaster
TCP, UDP
Computer worm
4500
IPSec NAT Traversal
UDP
Internet Protocol Security Network Address Translation (NAT) Traversal
4664
Google Desktop
TCP
Google Desktop’s built-in HTTP server and indexing software
4672
eMule
UDP
Peer-to-peer file-sharing software
4899
Radmin
TCP
Remote computer control software
5000
UPnP
TCP
Universal Plug and Play
5001
iperf
TCP
Tool for measuring TCP and UDP bandwidth performance
5004-5005
RTP, RTSP
UDP
Real-time Transport Protocol, Real Time Streaming Protocol
5050
Yahoo! Messenger
TCP
Instant messaging service from Yahoo
5060
SIP
TCP, UDP
Session Initiation Protocol
5061
SIP-TLS
TCP
Session Initiation Protocol over TLS
5190
(Multiple uses)
TCP, UDP
ICQ, AIM (AOL Instant Messenger), Apple iChat
5222-5223
XMPP
TCP, UDP
Extensible Messaging and Presence Protocol Client Connection; also used in Google Talk, Jabber, Apple iChat, WhatsApp, etc.
5353
MDNS
UDP
Multicast DNS
5432
PostgreSQL
TCP
PostgreSQL database system
5554
Sasser
TCP
Computer worm
5631-5632
pcAnywhere
UDP
Symantec pcAnywhere
5800
VNC over HTTP
TCP
Virtual Network Computing (VNC)
5900-5999
RFB/VNC Server
TCP, UDP
VNC Remote Frame Buffer RFB protocol
6000
X11
TCP
X Window System protocol for delivering payloads between X clients and servers
6001
X11
UDP
X Window System protocol for delivering payloads between X clients and servers
6112
Diablo
TCP, UDP
Gaming
6129
DameWare
TCP
Remote access software developed by SolarWinds
6257
WinMX
UDP
Windows Music Exchange, peer-to-peer file-sharing freeware
6346-6347
Gnutella2
TCP, UDP
Peer-to-peer network protocol
6379
Redis
TCP
Popular non-relational database management system (NoSql)
6500
GameSpy
TCP, UDP
Gaming
6566
SANE
TCP, UDP
Scanner Access Now Easy
6588
AnalogX
TCP
AnalogX proxy server
6588
HTTP Proxy
TCP
Common web proxy server ports: 80, 8080, 3128, 6588
6665-6669
IRC
TCP
Internet Relay Chat
6679, 6697
IRC over SSL
TCP
Internet Relay Chat
6699
Napster
TCP
Peer-to-peer file-sharing application
6881-6999
BitTorrent
TCP, UDP
BitTorrent uses this range of ports the most often
6891-6901
Windows Live Messenger
TCP, UDP
Alternatively: MSN Messenger
6970
Quicktime
TCP, UDP
QuickTime streaming server
7000
Cassandra
TCP
Inter-node communication within the cluster on Apache Cassandra
7001
Cassandra
TCP
SSL-enabled inter-node communication within the cluster on Apache Cassandra
7199
Cassandra JMX
TCP
Java Management Extensions on Apache Cassandra
7648-7649
CU-SeeMe
TCP, UDP
Internet video conferencing client made by Cornell University
8000
Internet Radio
TCP
Commonly choice of alternate HTTP port for web applications
8086
Kaspersky AV
TCP
Kaspersky AV Control Center
8087
Kaspersky AV
UDP
Kaspersky AV Control Center
8118
Privoxy
TCP
Advertisement-filtering Web proxy
8200
VMware Server
TCP, UDP
VMware vSphere Fault Tolerance
8222
VMware Server
TCP, UDP
VMware Server Management User Interface (insecure Web interface).
8500
(Multiple uses)
TCP, UDP
Adobe ColdFusion, Flight Message Transfer Protocol
8767
Teamspeak
UDP
VoIP communication system for online gaming
8866
Bagle.B
TCP
Computer worm
9042
Cassandra
TCP
Apache Cassandra, a NoSql database
9100
PDL
TCP
PDL Data Stream, used for printing to certain network printers
9101-9103
Bacula
TCP, UDP
For automating backup tasks
9119
MXit
TCP, UDP
MXit Instant Messaging (deprecated)
9800
WebDAV
TCP, UDP
Web-based Distributed Authoring and Versioning, an extension of HTTP
9898
Dabber
TCP
Computer worm (Sasser)
9999
Urchin
TCP, UDP
Urchin Web Analytics
10000
(Multiple uses)
TCP, UDP
Network Data Management Protocol; applications: Webmin, BackupExec, Viatalk; gaming: The Matrix Online, Dungeon Fighter
10161
[[SNMP (10161, UDP 161)]] SNMP-agents (encrypted)
TCP
Simple network management protocol; agents communicate on this port
10162
SNMP-trap (encrypted)
TCP
Simple network management protocol; listens for asynchronous traps
10113
NetIQ
TCP, UDP
NetIQ Endpoint
10114
NetIQ
TCP, UDP
NetIQ Qcheck
10115
NetIQ
TCP, UDP
NetIQ Endpoint
10116
NetIQ
TCP, UDP
NetIQ VoIP Assessor
11371
OpenPGP
TCP, UDP
OpenPGP HTTP Keyserver
12345
NetBus
TCP
NetBus remote administration tool (Trojan horse)
13720-13721
NetBackup
TCP, UDP
NetBackup request daemon
14567
Battlefield
UDP
Gaming
15118
Dipnet/Oddbob
TCP
Trojan horse
19226
AdminSecure
TCP
Panda Software AdminSecure Communication Agent
19638
Ensim
TCP
Ensim Control Panel
20000
Usermin
TCP, UDP
Web email interface for regular non-root users
24800
Synergy
TCP, UDP
Keyboard/mouse sharing software
25999
Xfire
TCP
Communication tool for gamers (deprecated)
27015
Half-Life
UDP
Gaming
27017
MongoDB
TCP
NoSql database
27374
Sub7
TCP, UDP
Trojan horse
28960
Call of Duty
TCP, UDP
Gaming
31337
Back Orifice
TCP, UDP
Remote administration tool used for Trojan horses
33434+
traceroute
UDP
Utility for displaying paths and measuring transit delays of packets across a network
Source: https://www.stationx.net/common-ports-cheat-sheet/
Kubernetes
Service
TCP Ports
etcd
2379, 2380
API server
6443
Scheduler
10251
Controller Manager
10252
Kubelet API
10250
Read-Only Kubelet API
10255
Last updated